how to: navegation bar

[Ghz]

Hello there,
I successfully could generate a function which allow me to add as much categories and subcategories as I want. Now, I need to generate another function which could build a linked navegation bar as my sites visitores go down surfing my categories and subcategories. It's much more like the navegation bar here in this forums.

Any ideas?

Any help would be highly appreciated in advance,
Regards,
Ghz

[BittenApple]

You mean like "SitePoint Forums > Program Your Site > PHP"
And there are dotted lines are you progress?

[Ghz]

yes exactly, That's what I meant

Any clues?

[ujjwal]

I am also looking that.Have you got it?

[Ghz]

not yet really. I could make a navegation bar but without being linked and as soon as I add any piece of html like links or anything else to it, it gives me an error. I'm still working on it and I wish anyone can help us never hisitate to do so.

Regards,
Ghz

[ujjwal]

Actually,I know that it can be built on java script.but looking for any php script.
I think it is good topics to do that

[spikeZ]

not yet really. I could make a navegation bar but without being linked and as soon as I add any piece of html like links or anything else to it, it gives me an error. I'm still working on it and I wish anyone can help us never hisitate to do so.

Regards,
Ghz

Post you nav code!
That way we can maybe help you!!!!!

Spike

[Ghz]

I have made this small function so you can use it to generate a navigation bar. Feel free to use it. Now here is the code:

    function  nav_bar($id)
  {
   global $ecats;
   
    $query = mysql_query("SELECT * FROM your_table WHERE id='$id'");
    $row = mysql_fetch_array($query);

    $cats = "<a href=index.php>{$row['title']}</a>&nbsp;»";
   
   if($row['catid'] != 0) {
     nav_bar($row['catid']);
   }
     $ecats.= $cats;
     return $ecats;
  }  
    $ecats = "";
    
   nav_bar($id); 

Thanks for everyone helped us in here. And I'm ready to help anyone who will need any kind of help.

Regards,
Hakeem

[karinne]

try changing

$cats = "<a href=index.php>{$row['title']}</a>&nbsp;»"; 

to

$cats = "<a href=index.php>".$row['title']."</a>&nbsp;»"; 

[Ghz]

why?

[karinne]

doesn't {row['title']} show up when the page is displayed instead of the actual title?

[realestate]

Most relevant link should be on top or left, less relevant ones ones should be on right are at the bottom.
( s e o)

[Defender1]

Just for reference, what you guys are talking about is commonly refered to as "breadcrumbs".
Try searching on that and see if you find something.

[swdev]

Although you haven't explicitly sais so, I assume that the data you store in your navigation table is hierarchical data, i.e. each row has a parent row. If this is the case, the doing breadcrimbs is relatively straight forward. Checkout this article http://www.sitepoint.com/article/hie...-data-database and use the modified preorder tree traversal method. All the code you need is in the article.

[Musicbox]

you can simply create a mod in php which can show sub categories.

[Ghz]

Actually I would like to thank you guys and girls for your participation in here. Secondly:

doesn't {row['title']} show up when the page is displayed instead of the actual title?

Yes, so what's the difference between yours and mine. I mean what's the point of using yours?

you can simply create a mod in php which can show sub categories

Is there someway to write a mod which can be easier than these few lines? I mean the idea is too simple and it will be greater if you could simplify it to us. Anyway, I have put this piece of code so that poeple can use and modify. If you are interested you can just go a head with it.

Regards,
Hakeem

[calkie_f]

Actually I would like to thank you guys and girls for your participation in here. Secondly:

doesn't {row['title']} show up when the page is displayed instead of the actual title?

Yes, so what's the difference between yours and mine. I mean what's the point of using yours?

{$row['title']} does not show up as {$row['title']}, but the actual title will when used in double-quotes. So either's good.

Rgds, Ian

[Tekime]

I found it extremely useful to create a tree class to represent these types of data structures. It accepts active id, primary field, parent field, title, id field, etc. and optionally table name and some other configuration values.

You can either create entries on the fly ($tree->add_entry) or build them automatically from a database ($tree->build()), or a combination of both. By using dynamic table and field names, you can build a tree from the table of your choice, then add and remove entries, and render it when you're done.

I plugged in a custom menu rendering method (which took AGES!), so now I can build a tree, and spit it out as either breadcrumbs OR a very robust CSS menu with infinite levels of entries, active nodes, automatic collapsing, etc. I also created a method for myGoSuMenu output, which spits out a dynamic tree-like javascript menu.

I would post some code but it's tightly coupled with my existing architecture and would be pretty useless to you. Anyway it was a great exercise in programming, I just thought I would throw some ideas out that have benefited me in my development greatly. The concepts behind a heirarchial structure like this show up all over the place in development, so this concept can really be extended to apply in a lot of places.

[CapitalWebHost]

First of all, that type of nav bar is called a "breadcrumb".

Do a search of phpclasses.org for the term breadcrumb and you should find some classes that will assist in making them for you.

Here's a breadcrumb class..

http://www.baskettcase.com/classes/breadcrumb/

[CapitalWebHost]

As for Tekime...I use this class..

http://www.phpclasses.org/browse/package/1268.html

Works just like the one you described...I've made some modifications to it for customized use though.

[yogenmaniyar]

can anybody help me with a collapsible menu (vertical)??

[sethnick99]

Just use DHTML and ASP. I find it is much easier and cleaner to.